I had a hard time trying to get my Authentec AES2810 fingerprint reader to work with DigitalPersona under a fresh install of Windows 7 x64.
The driver was successfully installed from Microsoft Update and I could use the AES2810 to log in to Windows 7 using the native functionality. However, DigitalPersona kept displaying "Can't connect to fingerprint reader".
I tried with several drivers provided by HP and none of them seemed to work with DigitalPersona. Finally, I tried downloading a driver package from the Dell support site and bingo! Now it works like a charm!
Here's a link to the version 220.127.116.11, A05 driver package: Downloads
I hope this will help some of you guys out there!